Adjustable attachment mechanism



FIG. 1 is a perspective view of the adjustable attachment mechanismaccording to a preferred embodiment of the invention.

FIG. 2 is a top view of the adjustable attachment mechanism of FIG. 1,the bottom view being a mirror image thereof.

FIG. 3 is an elevation end view of the adjustable attachment mechanismof FIG. 1, the opposite end being a mirror image thereof; and ,

FIG. 4 is a front elevation view of the adjustable attachment mechanismof FIG. 1, the rear elevation view being a mirror image therof.

The broken line showing is included for the purpose of illustratingenvironment and forms no part of the part of the claim design.

The ornamental design for the adjustable attachment mechanism, as shownand described.